£18 Find Cheap Flights from Ireland to Brussels

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Brussels departing on 26/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Brussels

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Brussels, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Brussels, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 26% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

Cheap Flights from Ireland to Brussels

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ireland to Brussels that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ireland to Brussels

Sun, 28 Sep - Thu, 9 Oct
Ryanair Logo
06:25 - 09:05DUB-BRU
1h 40mdirect
Ryanair Logo
21:40 - 22:20BRU-DUB
1h 40mdirect
£32Ryanair
Find Deal
Thu, 11 Sep - Mon, 22 Sep
Ryanair Logo
07:05 - 09:45DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
£33Ryanair
Find Deal
Sat, 30 Aug - Mon, 1 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
£65Aer Lingus
Find Deal
Mon, 8 Sep - Wed, 10 Sep
 Logo
21:30 - 09:15DUB-BRU
10h 45m1 stop
 Logo
21:30 - 22:10BRU-DUB
1h 40mdirect
Thu, 11 Sep - Mon, 15 Sep
 Logo
19:05 - 09:40DUB-BRU
13h 35m1 stop
 Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
Wed, 3 Sep - Thu, 4 Sep
Lufthansa Logo
05:55 - 20:40DUB-BRU
13h 45m1 stop
Lufthansa Logo
08:55 - 19:15BRU-DUB
11h 20m1 stop
£141Lufthansa
Find Deal
Tue, 11 Nov - Fri, 14 Nov
Scandinavian Airlines Logo
19:05 - 09:40DUB-BRU
13h 35m1 stop
Scandinavian Airlines Logo
19:20 - 09:30BRU-DUB
15h 10m1 stop
£146Scandinavian Airlines
Find Deal
Sun, 17 Aug - Tue, 19 Aug
Scandinavian Airlines Logo
21:45 - 10:15DUB-BRU
11h 30m1 stop
Scandinavian Airlines Logo
18:55 - 10:55BRU-DUB
17h 00m1 stop
£155Scandinavian Airlines
Find Deal
Thu, 9 Oct - Tue, 14 Oct
Lufthansa Logo
10:40 - 17:15DUB-BRU
5h 35m1 stop
Lufthansa Logo
09:35 - 16:55BRU-DUB
8h 20m1 stop
£156Lufthansa
Find Deal
Sat, 23 Aug - Tue, 26 Aug
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
10:20 - 11:05BRU-DUB
1h 45mdirect
£164Aer Lingus
Find Deal
Booking Insights

KAYAK's insights & trends for flights to Brussels

Get data-powered insights and trends into flights to Brussels to help you find the cheapest flights, the best time to fly and much more.

What is a good deal for flights to Brussels?

If you’re looking for cheap airfare to Brussels, 25% of our users found tickets to Brussels for the following prices or less: From Dublin £62 return.

How far in advance should I book a flight to Brussels?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Brussels, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 4 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Which is the cheapest airport to fly into in Brussels?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Brussels is Ostende-Bruges Airport (OST), with an average flight price of £53.

Good to know - Cheap tickets from Ireland to Brussels

Cheapest flight£18
Flight from Dublin to Brussels

FAQs - booking Brussels flights

  • Which Brussels airport is closest to central Brussels?

    Brussels is served by 2 major airports. Brussels Airport (7 miles) is the closest to the centre of Brussels and Charleroi Brussels is 27 miles from the centre.

  • How much is a flight to Brussels?

    On average, a flight to Brussels costs £87. The cheapest price found on KAYAK in the last 2 weeks cost £15 and departed from Dublin Airport.

  • What is the cheapest day to fly to Brussels?

    Based on KAYAK data, the cheapest day to fly to Brussels is Thursday where round-trip tickets can be as cheap as £56. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are £131 on average.

  • How does KAYAK find such low prices on flights to Brussels?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Brussels.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Brussels?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Brussels?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Brussels?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Brussels?

    The cheapest time of day to fly to Brussels is generally in the evening, when round-trip flights cost £89 on average. The most expensive time of day to fly to Brussels is generally in the morning, which is peak travel time and where the average cost of a ticket is £109.

  • How many direct flights to Brussels are there each week?

    Each week there are around 105 direct flights from within Ireland to Brussels. The most common day for departures is Wednesday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Brussels

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Brussels flight deals.

Reviews of the top airlines flying from Ireland to Brussels

 
See real verified KAYAK customer reviews for airlines flying to Brussels. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Brussels. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Brussels? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Aer LingusOverall score based on 1192 reviews
7.1Comfort
8.0Crew
6.4Food
7.3Boarding
6.8Entertainment
Airline reviews

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

8.0 ExcellentAnonymous, Jul 2025ORD - DUB
Read more Aer Lingus reviews

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

They boarded us but somehow did not manage to record us boarding, so rather than check if we were onboard they removed our bags from the aircraft. I got a call from Ryanair staff in Dublin when I landed in Madiera asking me where I was!!! When I said I was in Madiera I was told what had happened. Our bags were to be sent to Madiera the next day via Manchester, they didn’t arrive. They are now due to arrive two days before we leave. I don’t see myself using Ryanair again unless I am forced to and even then I may just refuse.

Flight was over an hour late. Boarding was really messy with long queues at the plane.

Cabin crew couldn’t be less interested. Cabin manager was the most arrogant and the rudest I’ve encountered in many years.

Flight got delayed and they didn’t keep us informed all the time.

The worst flight ever. Sitting in plane for 4 hours delay and then they change crew. No water or food offered to any passengers including children in that time. Only 2 toilets out of 3 operating for flight with 200 passengers. Only enough food available for about 7 rows of seats depending where you sat you might be lucky. Cabin crew very unfriendly.

Big delay on run way not much explanation why, missed a important meeting in Dublin, maybe if they did nt persist measuring everyone bag over 2 cm we would have got off on time.

Their customer service needs an overhaul. I wish we could access them and the could be more helpful. Also, the website has been crashing and I had numerous technical errors. My flight was cancelled and we spent so much time trying to get help because the tech was failing.

The punctuality of f the flight was super: we left on time and arrived about 20 minutes early - and the cabin crew were both friendly and efficient. The only downside was that Ryanair appears to have resumes its old obsession with sizing cabin bags again after a long and welcome absence.

They lost a bag and now our vacation is ruined

Flight details on public information screen were misleading and wrong.

Everything you need to know for your flight to Brussels

Cabin class types available on flights to Brussels

Cabin classes available on flights to Brussels. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.